44096

Appears in sequences

• a(n) = T(2n,n-1), where T is the array defined in A026082.at n=7A026092
• G.f. satisfies A(x) = 1 + x*A(x)^2 + x^2*(A(x)^2 - A(x)).at n=10A119370
• Triangular sequence from coefficients of characteristic polynomial of n X n prime element matrices: M=A.B.A^(-1); (A(3) is singular): examples; A(4)= {{2, 3, 5, 7, 11}, {3, 5, 7, 11, 13}, {5, 7, 11, 13, 17}, {7, 11, 13, 17, 19}, {11, 13, 17, 19, 23}} B(4)= {{3, 5, 7, 11, 13}, {5, 7, 11, 13, 17}, {7, 11, 13, 17, 19}, {11, 13, 17, 19, 23}, {13, 17, 19, 23, 29}}.at n=25A137405
• Number of (n+2)X5 0..1 matrices with each 3X3 subblock having the same population.at n=4A224646
• Number of (n+2)X7 0..1 matrices with each 3X3 subblock having the same population.at n=2A224648
• T(n,k)=Number of (n+2)X(k+2) 0..1 matrices with each 3X3 subblock having the same population.at n=23A224651
• T(n,k)=Number of (n+2)X(k+2) 0..1 matrices with each 3X3 subblock having the same population.at n=25A224651
• a(n) = Sum_{i=0..n} digsum_8(i)^4, where digsum_8(i) = A053829(i).at n=30A231683
• Number of primes of the form b^2+3 for b <= 10^n.at n=5A302435